@book{Langholm_1992,
title={Economics in the Medieval Schools: Wealth,
Exchange,
Value,
Money and Usury According to the Paris Theological Tradition,
1200-1350},
ISBN={9789004094222},
url={http://dx.doi.org/10.1163/9789004452428},
DOI={10.1163/9789004452428},
publisher={BRILL},
author={Langholm},
year={1992},
month=jan }